Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2007-12-26
2010-12-07
Young, Wayne R (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S112280
Reexamination Certificate
active
07848210
ABSTRACT:
An optical head includes: a first optical element having an optical characteristic of reflecting a light of a first wavelength and transmitting lights of second and third wavelengths, on the first optical element the light of the first wavelength from a first light source being incident; and a second optical element having an optical characteristic of transmitting the light of the first wavelength, reflecting the light of the second or the third wavelength in a first polarization state and transmitting the light of the second or the third wavelength in a second polarization state, a first surface on which the light reflected by the first optical element is incident, a second surface on which the lights of the second and the third wavelengths from second and third light sources are incident, and a third surface emitting the first, the second and the third lights incident from the first and the second surfaces.
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Alunkal Thomas D
Kabushiki Kaisha Toshiba
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Young Wayne R
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